Adsorption of sulfamethoxazole and sulfapyridine antibiotics in high organic content soils

Chen, Kuen Lin; Liu, Lichun; Chen, Wan Ru

doi:10.1016/j.envpol.2017.08.011

Cited by 134 publications

(35 citation statements)

References 37 publications

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“…DOM can affect the adsorption of OTC through hydrophobic partitioning, complexation, and hydrogen bonding. Hence, the effects of PH on HOS and HRDOM are consistent [45]. It has been known that the zero charge point of most aluminosilicate minerals is around pH 3.00 [46].…”

Section: Comparative Studysupporting

confidence: 59%

Adsorption Characteristics of Oxytetracycline by Different Fractions of the Organic Matter from Humus Soil: Insight from Internal Structure and Composition

Luo

Yang

Shen

et al. 2020

IJERPH

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For minimizing the transport of antibiotics to groundwater, the migration of antibiotics in soils should be investigated. Soil organic matter can affect the migration of antibiotics. To date, the influence of aromatics and aliphatic content of organic matter on the adsorption of antibiotics has been controversial. To better understand the reaction mechanism of soil organic matter with antibiotics, this study investigated the adsorption of oxytetracycline (OTC) by humus soils (HOS) and their fractions. HOS were sequentially fractionated into four organic fractions, including the removal of dissolved organic matter (HRDOM), removal of minerals (HRM), removal of free fat (HRLF), and nonhydrolyzable organic carbon (HNHC). Moreover, batch experiments revealed that adsorption capacity was ordered by HNHC > HOS > HRDOM > HRLF > HRM. SEM images and N2 adsorption/desorption isotherms indicate that adsorption capacity is independent of the external structure. However, adsorption capacity is related to the internal structure and composition. Combination analysis with elemental composition and infrared spectroscopy showed that the adsorption capacity of HRM, HRLF, and HNHC had a good positive correlation with aromaticity, but a negative correlation with polarity and hydrophilicity. Additionally, the rule of binding affinity between OTC and functional groups with different properties was summarized as aromatic > polarity > hydrophilic.

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Section: Comparative Studysupporting

confidence: 59%

Adsorption Characteristics of Oxytetracycline by Different Fractions of the Organic Matter from Humus Soil: Insight from Internal Structure and Composition

Luo

Yang

Shen

et al. 2020

IJERPH

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“…Several studies have shown that the sorption of sulfonamide antibiotics tends to decline with the increase of pH [42][43][44][45][46][47]. However, in some cases, surface complexation may affect the overall behavior of sorption for organic compounds [40,48,49], which could be an explanation for the slight increase of K d for SUL at pH 7.…”

Section: Sorptionmentioning

confidence: 99%

Sorption and Degradation Potential of Pharmaceuticals in Sediments from a Stormwater Retention Pond

Fan

Nielsen

Vollertsen

2019

Water

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Stormwater retention ponds commonly receive some wastewater through misconnections, sewer leaks, and sewer overloads, all of which leads to unintended loads of organic micropollutants, including pharmaceuticals. This study explores the role of pond sediment in removing pharmaceuticals (naproxen, carbamazepine, sulfamethoxazole, furosemide, and fenofibrate). It quantifies their sorption potential to the sediments and how it depends on pH. Then it addresses the degradability of the pharmaceuticals in microcosms holding sediment beds and pond water. The sediment-water partitioning coefficient of fenofibrate varied little with pH and was the highest (average log Kd: 4.42 L kg−1). Sulfamethoxazole had the lowest (average log Kd: 0.80 L kg−1), varying unsystematically with pH. The coefficients of naproxen, furosemide and carbamazepine were in between. The degradation by the sediments was most pronounced for sulfamethoxazole, followed by naproxen, fenofibrate, furosemide, and carbamazepine. The first three were all removed from the water phase with half-life of 2–8 days. Over the 38 days the experiment lasted, they were all degraded to near completion. The latter two were more resistant, with half-lives between 1 and 2 months. Overall, the study indicated that stormwater retention ponds have the potential to remove some but not all pharmaceuticals contained in wastewater contributions.

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“…As shown in Figure 5 and Table 1, the best adsorption performance was obtained at pH 6.5. The pHpzc of activated coke was 6.5 and the pKa of sulfamethoxazole was 5 [38]. At pH 4, electrostatic interaction contributes to the major adsorption mechanism due to the negatively charged sulfamethoxazole species and the positively charged surface of LACs.…”

Section: Effect Of Flow Ratementioning

confidence: 99%

Dynamic Adsorption of Sulfamethoxazole from Aqueous Solution by Lignite Activated Coke

Chen

et al. 2020

Materials

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In this paper, lignite activated coke was used as adsorbent for dynamic column adsorption experiments to remove sulfamethoxazole from aqueous solution. The effects of column height, flow rate, initial concentration, pH and humic acids concentration on the dynamic adsorption penetration curve and mass transfer zone length were investigated. Results showed penetration time would be prolonged significantly by increasing column height, while inhibited by the increasement of initial concentration and flow rate. Thomas and Yoon-Nelson model and the Adams-Bohart model were used to elucidate the adsorption mechanism, high coefficients of R2 > 0.95 were obtained in Thomas model for most of the adsorption entries, which revealed that the adsorption rate could probably be dominated by mass transfer at the interface. The average change rates of mass transfer zone length to the changes of each parameters, such as initial concentration, the column height, the flow rate and pH, were 0.0003, 0.6474, 0.0076, 0.0073 and 0.0191 respectively, revealed that column height may play a vital role in dynamic column adsorption efficiency. These findings suggested that lignite activated coke can effectively remove sulfamethoxazole contaminants from wastewater in practice.

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Adsorption of sulfamethoxazole and sulfapyridine antibiotics in high organic content soils

Cited by 134 publications

References 37 publications

Adsorption Characteristics of Oxytetracycline by Different Fractions of the Organic Matter from Humus Soil: Insight from Internal Structure and Composition

Adsorption Characteristics of Oxytetracycline by Different Fractions of the Organic Matter from Humus Soil: Insight from Internal Structure and Composition

Sorption and Degradation Potential of Pharmaceuticals in Sediments from a Stormwater Retention Pond

Dynamic Adsorption of Sulfamethoxazole from Aqueous Solution by Lignite Activated Coke

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